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What decisions do routers make as a packet enters an interface?
Wiki User
∙ 15y ago
It determines which local IP on a given Router Table, be it DHCP or static, that packet is assigned to.
Wiki User
∙ 15y ago
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Which table does a router use to make decisions about the interface through which a data packet is to be sent?
Routing table
What devices transfer packet across multiply network and use tables to store address to determine to best destination?
Routers
What are routers used for?
A router is a device that forwards data packets between computer networks, creating an overlay internetwork. A router is connected to two or more data lines from different networks. When a data packet comes in on one of the lines, the router reads the address information in the packet to determine its ultimate destination. Then, using information in its routing table or routing policy, it directs the packet to the next network on its journey. Routers perform the "traffic directing" functions on the Internet. A data packet is typically forwarded from one router to another through the networks that constitute the internetwork until it gets to its destination node.[1]The most familiar type of routers are home and small office routers that simply pass data, such as web pages and email, between the home computers and the owner's cable or DSL modem, which connects to the Internet (ISP). However more sophisticated routers range from enterprise routers, which connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone.
What is the difference between routing and forwarding?
routing refers to deciding the route of the packet from one system (a computer) to another system (a computer). It involves many intermediate routers and routing table knowledge.forwarding is a rather simple process of passing a packet from one port/interface to another port /interface. It generally involves one of the routers and routers forwarding table informationThat's what they called call forwarding service in telecommunication.
What is the role of the address field in a packet travelling through a datagram?
There are two address fields. Source is the IP address the packet came from and destination is the IP address the packet is meant to be delivered to.
As a packet enters an interface the router checks the x to see whether it is routable?
x -> routing table
Which table does a router use to make decisions about the interface through which a data packet is to be sent?
Routing table
When forwarding a packet which route will the packet select?
First, routing is the process a router performs when making forwarding decisions for each packet arriving at the gateway interface. To forward a packet to a destination network, the router requires a route to that network. If a route to a destination network does not exist on the router, the packet will be forwarded to the default gateway. Now, the destination network can be a number of routers or hops away from the default gateway. If the router has an entry for the network in its routing table, it would only indicate the next-hop router to which the packet is to be forwarded to and not the exact route to the final router. To sum it up, the routing process uses a routing table to map the destination address to the next hop and then forwards the packet to the next-hop address.
How do you connect four routers in packet tracer?
Lun te wajao inu behnchod
Which route will be preferred for this packet?
through the Fa0/1 interface
When forwarding a route which route will router select?
First, routing is the process a router performs when making forwarding decisions for each packet arriving at the gateway interface. To forward a packet to a destination network, the router requires a route to that network. If a route to a destination network does not exist on the router, the packet will be forwarded to the default gateway. Now, the destination network can be a number of routers or hops away from the default gateway. If the router has an entry for the network in its routing table, it would only indicate the next-hop router to which the packet is to be forwarded to and not the exact route to the final router. To sum it up, the routing process uses a routing table to map the destination address to the next hop and then forwards the packet to the next-hop address.
A simple metric that counts the number of routers a packet must traverse?
It's Hop Count
Which router has the best hardware firewall?
All routers provide good hardware firewalls using stateful packet inspection (SPI), but Buffalo routers are excellent in this regard.
What steps are taken when forwadin an icmp packet?
For each router, the following steps occur: 1) The "access-group in" command is checked on the interface, and discards the packet if the rule tells it to do so. 2) The "TTL" field is decreased by 1. 3) If TTL is now 0, the router discards the packet and sends a reply packet back to the sender. 4) The packet's IP address is compared to the routing table to determine the next hop of the packet. 5) The router advises if the network or host is unreachable due to a down interface or no known route. 6) The router sends the packet to the outgoing interface's queue to be sent to the next hop. 7) The "access-group out" command is checked on the interface, and discards the packet if the rule tells it to do so. 8) The router sends the packet to the next hop.
What would be the path of a packet sent from Router C to Router D if Router A was down?
taka the three routers
What is the function of the OSPF LSR packet?
It is used by the receiving routers to request more information about any entry in the DBD.
What is the term used to define the number of routers a packet must pass through to reach a particular network?
Hop count
